Aug 28, 2017 · The filter() method creates a new array with all elements that pass the test implemented by the provided function. Also, use typeof operator in order to find out the type of …

Nov 3, 2017 · There is no way to use filter with an async function (at least that I know of). The simplest way that you have to use filter with a collection of promises is to use Promise.all and …

Array#filter() expects the function you give it to return a truthy or falsy value. Elements for which the function returns a truthy value are kept in the new array, and those that give a falsy value …

Jul 10, 2018 · To answer the question in the title: you can use if inside filter. filter accepts a function; in a classical function(arg) { ... } function, you can use if, obviously. An arrow function …

Jan 25, 2016 · there's no need for slice nor indexOf within the reduce function, like i've seen in other examples! it makes sense to use it along with a filter function though: …

Jun 27, 2012 · In simple terms: If you call filter() on an array, JavaScript takes each value of that array and calls the function that you specified (in this case function(i) { return (i > 2); } and calls …

Object.filter(foo, ['z', 'a', 'b'], true); Function: Object.filter(foo, function (key, value) { return Ext.isString(value); }); Code. Disclaimer: I chose to use Ext JS core for brevity. Did not feel it …

Aug 5, 2015 · The omitBy function checks your filters object and removes any value that is null or undefined (if you take it out, the lodash.filter function wont return any result. The filter function …

Jul 26, 2020 · Use the split() function to return an array then use the filter() function to take out the non-numbers in the array. You can then convert back to a string (if needed) using string …

Mar 20, 2019 · I have an array of objects that I want to iterate over to produce a new filtered array. But also, I need to filter out some of the objects from the new array depending of a parameter. …